US Robotics COURIER Manual do Utilizador descarregar pdf (Página 302)

100

101

U.S. Robotics I-modem Command Reference

Glossary • Page G-44

V.21 Fax

An ITU-T standard for facsimile operations at 300 bps. U.S. Robotics or compatible fax

devices then transmit or receive at higher speeds.

V.21

An ITU-T standard for modem communications at 300 bps. Modems made in the United

States or Canada follow the Bell 103 standard. However, the modem can be set to answer

V.21 calls from overseas.

V.22

A ITU-T standard for modem communications at 1200 bps, compatible with the Bell

212A standard observed in the United States and Canada.

V.22bis

An ITU-T standard for modem communications at 2400 bps. The standard includes an

automatic link negotiation fallback to 1200 bps and compatibility with Bell 212A/V.22

modems.

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